My Inquiry
My Account
Texas Instruments TMP75AIDGKRG4
- Part No.:
- TMP75AIDGKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP75AIDGKRG4.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,767
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMP75AIDGKRG4 from Texas Instruments is a digital temperature sensor with I²C/SMBus interface, designed for thermal monitoring and protection in embedded systems. It delivers ±1 °C typical accuracy from −40 °C to +125 °C, 9–12-bit user-selectable resolution (down to 0.0625 °C), and operates from 2.7 V to 5.5 V. Its 8-pin VSSOP package supports up to eight devices per bus and integrates an open-drain ALERT output for overtemperature detection in power supplies and battery management.
For engineers reviewing the TMP75AIDGKRG4 datasheet, TMP75AIDGKRG4 pinout, TMP75AIDGKRG4 application, or TMP75AIDGKRG4 equivalent, key selection criteria include NIST-traceable calibration, SMBus Alert compatibility, low-quiescent-current operation (50 µA active, 0.1 µA standby), and support for fast-mode (400 kHz) and high-speed-mode (up to 2.38 MHz) I²C timing.
Technical Context
The TMP75AIDGKRG4 implements a ΔΣ ADC with on-chip diode-based temperature sensing, delivering linear digital output without lookup tables or external signal conditioning. Its control logic handles I²C address latching (via A0–A2 pins), configuration register programming, and ALERT assertion based on programmable THIGH/TLOW thresholds.
It supports interrupt mode (TM = 1) for SMBus Alert response, where the device returns its slave address upon alert command (00011001), with LSB indicating whether THIGH or TLOW triggered the event. Timeout protection resets the interface if SCL or SDA remains low >20 ms (min) / 30 ms (max), preventing bus lockup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±1 °C (typical), ±2 °C (max) over −40 °C to +125 °C - enables direct replacement of NTC/PTC thermistors without calibration |
| Resolution | 9–12 bits, user-selectable - provides 0.5 °C (9-bit) to 0.0625 °C (12-bit) quantization for precision thermal control loops |
| Supply Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V system rails without level-shifting |
| Quiescent Current | 50 µA (active), 0.1 µA (standby) - extends battery life in portable and IoT edge sensors |
| I²C Speed Support | Up to 2.38 MHz (high-speed mode) - reduces thermal measurement latency in real-time control applications |
| Address Options | 8 unique slave addresses via A0–A2 pins - allows multi-sensor thermal mapping on shared bus without address conflict |
| Alert Function | Open-drain ALERT output with SMBus Alert protocol support - enables hardware-triggered interrupt handling in microcontroller systems |
Pinout & Package
The TMP75AIDGKRG4 is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, pin-compatible with industry-standard LM75 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | Serial data I/O | Open-drain bidirectional line for I²C/SMBus data; requires external pull-up resistor (typically 4.7 kΩ) |
| 2 (SCL) | Serial clock input | Open-drain clock input; synchronizes data transfer and supports fast/high-speed modes |
| 3 (ALERT) | Overtemperature indicator | Open-drain output asserted when temperature exceeds THIGH or falls below TLOW; supports SMBus Alert protocol |
| 4 (GND) | Ground reference | Primary return path for analog and digital circuitry; must be low-impedance for accuracy |
| 5 (A2) | Address select input | Logic-level input (GND/V+) that sets MSB of 7-bit slave address; sampled at bus start |
| 6 (A1) | Address select input | Logic-level input (GND/V+) that sets middle bit of slave address; determines device uniqueness on bus |
| 7 (A0) | Address select input | Logic-level input (GND/V+) that sets LSB of slave address; enables up to eight devices per bus |
| 8 (V+) | Power supply | Single 2.7–5.5 V rail powering sensor core, ADC, and interface; bypass capacitor (0.01 µF) required |
Key Features
| Feature | Design Value |
|---|---|
| NIST-traceable calibration | 100% production testing against NIST-traceable standards per ISO/IEC 17025 - ensures metrological confidence for industrial and medical thermal monitoring |
| User-selectable resolution | Configurable 9–12-bit conversion via Configuration register - balances measurement speed (27.5 ms @ 9-bit) and precision (0.0625 °C @ 12-bit) |
| SMBus Alert compatibility | Responds to SMBus Alert command (00011001) with slave address and direction bit - enables multi-device interrupt arbitration without polling |
| Low-power standby mode | 0.1 µA shutdown current - suitable for always-on battery-powered sensors requiring periodic wake-up measurements |
| Thermal fault tolerance | Specified for −40 °C to +125 °C operating range with 150 °C junction limit - supports automotive under-hood and industrial motor control environments |
Applications
| Power-Supply Temperature Monitoring | Computer Peripheral Thermal Protection |
|---|---|
Use Scenario: Real-time monitoring of DC-DC converter MOSFET and inductor temperature to prevent thermal runaway during peak load. IC Role / Device Role / Timing Role: Digital temperature sensor providing calibrated 12-bit readings every 220 ms (12-bit mode) to host MCU via I²C. Use Value: Enables dynamic throttling before thermal shutdown, improving power supply reliability and MTBF. | Use Scenario: Detecting overheating in USB-C docking stations during simultaneous video/audio/data transmission. IC Role / Device Role / Timing Role: Slave device on shared SMBus, asserting ALERT when enclosure temperature exceeds 85 °C. Use Value: Triggers immediate fan activation or port disablement, preventing component degradation and user burn hazard. |
| Notebook Computers | Battery Management Systems |
Use Scenario: Measuring CPU/GPU heatsink temperature adjacent to thermal interface material for adaptive fan control. IC Role / Device Role / Timing Role: I²C temperature node with 9-bit resolution (37.5 ms conversion) for low-latency feedback in closed-loop thermal management firmware. Use Value: Reduces acoustic noise by minimizing unnecessary fan ramping while maintaining safe silicon junction temperatures. | Use Scenario: Monitoring Li-ion cell pack temperature during fast charging to prevent lithium plating and thermal runaway. IC Role / Device Role / Timing Role: NIST-traceable sensor interfaced to battery monitor IC via dedicated I²C bus segment. Use Value: Supports JEITA-compliant charge rate reduction below 0 °C and above 45 °C, extending cycle life and safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM/NOPB | Fixed 9-bit resolution (0.5 °C), ±2 °C max accuracy, no NIST traceability, 8-pin VSSOP | Lacks ALERT functionality and SMBus Alert protocol; limited to basic threshold monitoring | Choose for cost-sensitive, non-critical thermal monitoring where calibration traceability and interrupt capability are not required. |
| STTS751DT | 12-bit resolution, ±1 °C accuracy, SMBus Alert, but requires 1.7–3.6 V supply and offers only 4 address options | Lower voltage range limits use in 5 V systems; fewer address options constrain multi-sensor density | Prefer for ultra-low-voltage portable designs where 5 V compatibility and 8-device bus scalability are not needed. |
Compared with LM75BIMM/NOPB and STTS751DT, the TMP75AIDGKRG4 uniquely combines NIST-traceable calibration, 8-address flexibility, full SMBus Alert support, and dual-voltage (2.7–5.5 V) operation - making it optimal for industrial-grade thermal management where metrological integrity and bus scalability are critical.
Availability
TMP75AIDGKRG4 is available at Aetrix Electronics and suitable for power-supply thermal monitoring, notebook computer thermal management, and battery management systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TMP75AIDGKRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of leadership in precision sensing and industrial-grade ICs.
The TMP75AIDGKRG4 belongs to TI's TMPx75 family of digital temperature sensors, engineered specifically for replacing analog thermistors in thermal protection, environmental monitoring, and system health management applications where accuracy, low power, and I²C interoperability are essential.
FAQ
What is the operating temperature range of the TMP75AIDGKRG4?
The TMP75AIDGKRG4 is specified to operate from −40 °C to +125 °C, with guaranteed performance across this full range. Its junction temperature limit is 150 °C, and it maintains ±1 °C typical accuracy within the −40 °C to +125 °C ambient band. This makes the TMP75AIDGKRG4 suitable for demanding environments such as automotive engine bays, industrial motor drives, and high-density computing systems where thermal margins are tight.
Does the TMP75AIDGKRG4 require external calibration?
No, the TMP75AIDGKRG4 does not require external calibration. It is factory-calibrated against NIST-traceable standards per ISO/IEC 17025, delivering ±1 °C typical accuracy from −40 °C to +125 °C without user adjustment. The on-chip ΔΣ ADC and linear diode sensor eliminate the need for lookup tables or polynomial compensation - enabling drop-in deployment in thermal monitoring circuits where the TMP75AIDGKRG4 replaces NTC/PTC thermistors.
How many TMP75AIDGKRG4 devices can share the same I²C bus?
Up to eight TMP75AIDGKRG4 devices can operate on a single I²C bus, enabled by three hardware address pins (A0, A1, A2) that configure distinct 7-bit slave addresses. Each pin accepts GND or V+, yielding 2³ = 8 unique combinations. Unlike the TMP175 (27 addresses), the TMP75AIDGKRG4 prioritizes simplicity and NIST traceability over maximum node count - making it ideal for compact multi-zone thermal sensing where precise calibration outweighs extreme bus density.
What is the function of the ALERT pin on the TMP75AIDGKRG4?
The ALERT pin on the TMP75AIDGKRG4 is an open-drain output that asserts low when the measured temperature crosses either the programmable THIGH or TLOW threshold. In interrupt mode (TM = 1), it fully supports the SMBus Alert protocol: upon receiving command 00011001, the TMP75AIDGKRG4 responds with its slave address, and the LSB indicates whether THIGH (high) or TLOW (low) caused the event. This enables hardware-driven thermal interrupts without continuous polling - a key feature distinguishing the TMP75AIDGKRG4 from basic temperature sensors.
What supply voltage range does the TMP75AIDGKRG4 support, and what bypass capacitor is recommended?
The TMP75AIDGKRG4 supports a supply voltage range of 2.7 V to 5.5 V, ensuring compatibility with both 3.3 V and 5 V logic systems. A 0.01 µF ceramic bypass capacitor is recommended between V+ and GND, placed as close as possible to the device pins. This value supersedes older recommendations of 0.1 µF and is validated in the December 2020 revision of the datasheet to improve high-frequency noise immunity and ensure stable ADC operation across the full temperature and voltage range of the TMP75AIDGKRG4.
TMP75AIDGKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Resolution, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 85°C (-40°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 127°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-VSSOP
TMP75AIDGKRG4 FAQ
1.How can I place an order for TMP75AIDGKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP75AIDGKRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP75AIDGKRG4 reliable?
The price and inventory of TMP75AIDGKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP75AIDGKRG4 is usually 5 days.
3.What payment methods are accepted for TMP75AIDGKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP75AIDGKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP75AIDGKRG4?
TMP75AIDGKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP75AIDGKRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP75AIDGKRG4?
For technical support, including TMP75AIDGKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP75AIDGKRG4 requirements.
6.How does Aetrix verify that TMP75AIDGKRG4 is sourced from the original manufacturer or authorized distributors?
All TMP75AIDGKRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP75AIDGKRG4 meets industry standards.
7.What is the process for return or replacement of TMP75AIDGKRG4?
All TMP75AIDGKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TMP75AIDGKRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP75AIDGKRG4 part is unused and in its original packaging.
Return procedure for TMP75AIDGKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP75AIDGKRG4 Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
